Posterior staphylomatous outpouching

A posterior staphylomatous outpouching, such as illustrated above, elongates the globe and increases the risk of perforation by needle techniques.

Modified from: Edge R, Navon S. Scleral perforation during retrobulbar and peribulbar anesthesia: risk factors and outcome in 50,000 consecutive injections. J Cataract Refract Surg 1999; 25:1237.

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